Zobrazeno 1 - 10
of 46
pro vyhledávání: '"H.D. Stephens"'
Autor:
J. Ko, J. R. Ambuel, Y.M. Yang, K.J. Caspary, W. S. Harris, H.D. Stephens, J.A. Reusch, D.J. Den Hartog, N. A. Pablant, A. F. Falkowski, P. E. Robl, M. T. Borchardt, Hugh Summers, E. A. Den Hartog
Publikováno v:
Fusion Science and Technology. 59:124-127
Internal time-resolved measurement of magnetic field and electron temperature in low-field ( 1 T) plasmas is a difficult diagnostic challenge. To meet this diagnostic challenge in the Madison Symmetric Torus reversed-field pinch, two techniques are b
Autor:
J. R. Johnson, M.B. McGarry, D.J. Den Hartog, L. M. Reusch, H.D. Stephens, M. E. Galante, Paolo Franz
Publikováno v:
The Review of scientific instruments. 85(11)
Many plasma diagnostics contain complementary information. For example, the double-foil soft x-ray system (SXR) and the Thomson Scattering diagnostic (TS) on the Madison Symmetric Torus both measure electron temperature. The complementary information
Publikováno v:
Review of Scientific Instruments. 87:11E332
The two-color soft x-ray (SXR) tomography diagnostic on the Madison Symmetric Torus is capable of making electron temperature measurements via the double-filter technique; however, there has been a 15% systematic discrepancy between the SXR double-fi
Autor:
H.D. Stephens, D.J. Den Hartog, J. R. Johnson, L. M. Reusch, M. E. Galante, M.B. McGarry, Mark Nornberg, Paolo Franz
Publikováno v:
Nuclear Fusion. 55:123016
The effective ionic charge, Zeff, is determined through the integration of soft x-ray tomography and charge exchange recombination spectroscopy impurity density measurements in the Madison Symmetric Torus. Zeff is found is be 2.3 ± 0.1 in the core o
Autor:
F. Ebrahimi, D.J. Den Hartog, H.D. Stephens, Dalton D. Schnack, J.A. Reusch, Cary Forest, Jay Anderson
Publikováno v:
Physical review letters. 107(15)
New high time resolution measurements of the electron thermal diffusion {chi}{sub e} throughout the sawtooth cycle of the Madison Symmetric Torus reversed-field pinch have been made by utilizing the enhanced capabilities of the upgraded multipoint, m
Autor:
A. F. Falkowski, D.J. Den Hartog, Rob O'Connell, H.D. Stephens, J.A. Reusch, M. T. Borchardt, D. J. Holly
Publikováno v:
The Review of scientific instruments. 79(10)
The multipoint Thomson scattering diagnostic on the Madison Symmetric Torus (MST) is now fully operational with 21 spatial points, which cover the entire minor radius. Four full electron temperature profiles can be obtained during each MST discharge,
Autor:
D. J. Holly, M. T. Borchardt, Rob O'Connell, H.D. Stephens, J.A. Reusch, D.J. Den Hartog, A. F. Falkowski
Publikováno v:
Review of Scientific Instruments. 85:039902
Autor:
A. F. Falkowski, Lucas Morton, C.P. Kasten, J. Goglio, A. Plunkett, J.A. Reusch, M. T. Borchardt, D.J. Den Hartog, Eli Parke, H.D. Stephens, N. C. Hurst, W. H. Harris
Publikováno v:
Review of Scientific Instruments. 83:10E324
Calibration of the Madison Symmetric Torus Thomson scattering system has been refined to improve temperature fluctuation measurements. Multiple avalanche photodiodes have been directly calibrated for use as reference detectors during calibration, imp
Publikováno v:
Plasma Physics and Controlled Fusion. 53:112001
Electron temperature fluctuations are correlated with the dominant (m, n) = (0, 1) edge-resonant magnetic tearing mode during sawtooth events in the Madison Symmetric Torus reversed-field pinch. Electron temperature fluctuations in phase with the (0,
Autor:
B. E. Chapman, Jay Anderson, S. Gangadhara, Stewart C. Prager, H.D. Stephens, D. L. Brower, Weixing Ding, K.J. Caspary, Eli Parke, David Ennis, A. F. Almagri, Rob O'Connell, D. J. Clayton, G. Fiksel, J.A. Reusch, Y.M. Yang, Richard Magee, D.J. Den Hartog, J. S. Sarff, Darren Craig, Santhosh Kumar
Publikováno v:
Plasma Physics and Controlled Fusion. 52:124048
By manipulating magnetic reconnection in Madison Symmetric Torus (MST) discharges, we have generated and confined for the first time a reversedfield pinch (RFP) plasma with an ion temperature >1keV and an electron temperature of 2keV. This is achieve